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A new solution to machine learning-em algorithm

the men's toilets." See, you've used the maximum likelihood estimate. You see the girls come out first, so under what circumstances will the girls come out first? Certainly is the probability that the girl comes out the biggest time, that when the girl comes out of the probability biggest ah, that must be the ladies ' room more than men in the time of the toilet, this is your estimated parameters.From the above two examples, what conclusions have you got?Back to the example of male height. In t

Introduction to forcible use of more complex passwords

required by the password, and disable a 3-bit or longer numeric sequence/[0-9] {3 ,}/? You can take a small step forward after that. The same character cannot be repeated more than twice in a line (adjacent /(.) 1 {2,}/, and there is not much trouble. This eliminates most of the troubles and does not require unnecessary restrictions on your user password selection.Update Better yet, why not forget all these rules and only use one minimum password strength requirement. Suggestions from reddit u

Speech recognition probability knowledge-likelihood estimation/Maximum Likelihood Estimation/Gaussian Mixture Model

points that are difficult to observe based on empirical data. Similar to the maximum likelihood estimation, but the maximum difference is the same. The Maximum Posterior Estimation incorporates the Prior Distribution of the expected estimator. Therefore, the maximum posterior estimation can be seen as the normalized maximum likelihood estimation. First, let's review the maximum likelihood estimation in the previous article. Assume that X is an indepe

Measure the test taker's knowledge about the impact of multithreading on multi-core CPU branch prediction.

-consuming? Simple speculation 1: it may be that test1 (2, 3) affects the prediction result of test1 (2, 4) Branch. The branch prediction tool has a history table, the branch prediction history previously executed affects the subsequent selection. Then we analyze the 2nd rows. Obviously test1 (2, 4) is the best result. Two threads execute the same code and if is always true. Let's look at the test (2, 3) Result of the second row, which is better than the result of the second row. Why is the diff

[Statistical tutorial] Chapter 6 sampling Inference

standard deviation can be used as the unbiased estimator of the population standard deviation.Evaluate the knowledge of this example:In a batch of materials, spot check on 20 pieces of Measured Weight Values as follows (unit: kg)110 111 111 112 113 114 114 114116 116 117 118 119 119 119 119121 124Estimate the average weight of this batch of materials and list the confidence intervals at a confidence level of 95%.  5. Simple random sampling error with

Basic audio knowledge and coding principles

the residual based on linear prediction. The Mechanism is as follows: only a small part of the residual data is transmitted, and all the residual data is reconstructed on the receiver (the residual data of the baseband is copied ). MPC: Multi-pulse coding, used to remove the correlation of residual, which is used to make up for the voiced and unvoiced sound, without intermediate state defects. CELP: codebook excited linear prediction. It uses audio channels to predict its cascade with the p

Recommended! Machine Learning Resources compiled by programmers abroad)

-means, etc. SVM under SVM-Julia. Kernel Density Estimator under kernal density-Julia Dimensionality loss ction-Dimension Reduction Algorithm Non-negative matrix decomposition package under NMF-Julia Neural Networks implemented by Ann-Julia Natural Language Processing Topic models-Julia topic Modeling Text Analysis Package under Text Analysis-Julia Data analysis/Data Visualization Graph Layout-A Graph Layout Algorithm implemented by Julia.

Common statistical concepts: t-test, F-test, Chi-square test, P-value, degree of freedom

. Therefore, the "last" sample data cannot be changed, because if it changes, the sum changes, and this is not allowed. As for some degrees of freedom is N-2 or something, is the same truth. When a statistic is calculated as an estimator, introducing a statistic will lose a degree of freedom. In layman's terms, there are 50 people in a class. We know that their average Chinese score is 80. Now we only need to know the scores of 49 people to deduce the

Machine Learning Resources overview [go]

browsers. Julia General Machine Learning The probability graph model framework implemented by PGM-Julia. The normalized discriminant analysis package implemented by Da-Julia. Regression-regression analysis algorithm package (such as linear regression and logistic regression ). Local regression-local regression, very smooth! Simple Julia Implementation of Naive Bayes-Naive Bayes Mixed models-(Statistics) Julia package of the Mixed Effect Model Basic MCMC sampling implemented by simple MC

Chinese programmers need to reform and open up

. production_v4.22Onecnc. one2000.mill. configursional_v4.22Onecnc. one2000.nesting _ v4.22Onecnc. one2000.profiler _ v4.22Onyxtree_professional_suite_v6Opel. EPC. v10.03 2cdOptimus V5.0 SP1Paintcost. estimator. For. Excel. v6.01 paint Engineering Cost Estimation SoftwarePAS. analysis. Center. v3.5Palettecad_v2.3.germanParasoft. SOA. Test. v4.5Paula. sg. v1.1.0.6P-CAD2001P-CAD 2002 for WindowsPca_beam_v1.51Pca_slab_v1.51Pcacolumn. v3.00cPcaframe. v1.1

6 Easy Steps to learn Naive Bayes algorithm (with code in Python)

Sign a 0 (zero) probability and'll is unable to make a prediction. This is often known as "Zero Frequency". To solve this, we can use the smoothing technique. One of the simplest smoothing techniques is called Laplace estimation. On the other side naive Bayes was also known as a bad estimator, so the probability outputs fromPredict_proba was Not to is taken too seriously. Another limitation of Naive Bayes is the assumption of independent pred

Parameter estimation (i) Point estimation moment Estimation method (1)

, the error between a and a becomes smaller. Estimates and estimates are collectively referred to as estimatesThe constructed statistic is called the Point estimator, and the resulting estimate is called the point estimate. Therefore, the estimated value of the non-identical sample is different. Whether we can use the statistical quantity of sample structure as an estimate of unknown parameters requires some rationality and theoretical basis.Here are

TCP Timeout and retransmission (2)

, value 1 for used).The Linux Method。。。RTT Estimator BehaviorsThe 1s RTO minimum recommended by [RFC6298] have been removed for the standard method for illustration.Most Real-world TCP implementations today violate this directive anyhow [RKS07].Rttm robustness to Loss and reordering。。。Timer-based retransmissionOnce a sending TCP have established its RTO based upon measurements of the time-varying values of effective RTT,Whenever it sends a segment it

Max Posterior Estimation (MAP)

The maximum posterior estimation is an estimation of points that are difficult to observe based on empirical data. Similar to the maximum likelihood estimation, but the maximum difference is the same. The Maximum Posterior Estimation incorporates the Prior Distribution of the expected estimator. Therefore, the maximum posterior estimation can be seen as the normalized maximum likelihood estimation. First, let's review the maximum likelihood estimation

Computer Architecture: quantitative research methods: Version 5th

control related 1143.2 reveal the basic Compiler Technology of ILP 1163.2.1 basic assembly line scheduling and loop expansion 1163.2.2 circular expansion and scheduling summary 1193.3 Use advanced branch prediction to reduce branch costs by 1203.3.1 competition forecaster: Adaptive Joint between a local forecaster and a global forecaster 1223.3.2 Intel core i7 branch estimator 1233.4 overcome data risks with dynamic scheduling 1243.4.1 dynamic schedu

Linux Traffic Control Application Instances

scheduler = yRate estimator= y Packet classifier API = y Compile and generate a new kernel: #make dep#make clean#make bzImage In Linux, the traffic controller TC is used to establish a queue at the output port for traffic control. The Linux traffic control method is based on the destination IP address, destination subnet network number, and port number, or the network number and port number of the source subnet based o

What you know about workload estimation and what you don't know

. A key prerequisite for doing so is that the estimation is completed independently. That is to say, the professional knowledge, background, and estimation process of the estimator are different. Similar to Delphi's estimation process, such as "Planning poker", software developers will also present their own estimates (their poker cards ), this is particularly useful in the context of software workload estimation. The team-based and structured estimat

Hadoop Performance Testing Tool

Su-HDFS Pi estimator testing: Time hadoop JAR/opt/cloudera/parcels/CDH/lib/hadoop-mapreduce/hadoop-mapreduce-examples.jar PI 10 100 Teragen/terasort/teravalidate testing: 1. Time hadoop JAR/opt/cloudera/parcels/CDH/lib/hadoop-mapreduce/hadoop-mapreduce-examples.jar teragen 10485760000/user/hduser/input #10,485,760,000 = 1000 GB = 1 Tb2. Time hadoop JAR/opt/cloudera/parcels/CDH/lib/hadoop-mapreduce/hadoop-mapreduce-examples.jar terasort/user/hduser/in

Redisnewdatastructure: theHyperLogLog

for m = 16384) since in this range the algorithm outputs biased or even results with larger errors depending on the exact range. The original HLL paper [1] suggests switching to Linear Counting [5] when the raw cardinality estimated by the first part of the HLL algorithm is less than m * 2.5. [5] http://dblab.kaist.ac.kr/Publication/pdf/ACM90_TODS_v15n2.pdf Linear counting is a different cardinality estimator that uses a simple concept. we have a

Detailed description of WCDMA uplink parameter optimization method (1)

Channel Power Ratio) between the Pilot Channel and the data Channel has a great impact on the system performance and is an important parameter to be optimized urgently. In addition, since the accuracy of channel estimation affects the error probability of the system, it is obviously highly correlated with the determination of the optimal power ratio. Because the channel estimator of the actual system generally uses the moving average filter, therefor

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